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Home / Product Category / SPEAKERS / Ceiling Speakers / 5.25" In-Ceiling Speakers / ACE400 3" Trimless Thin Bezel Ceiling Speaker Pair

ACE400 3" Trimless Thin Bezel Ceiling Speaker Pair

Product code: OSD-ACE400

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OSD Price: $19.95
Compare at: $49.95 You Save: $30.00 (60%)
Sold in pairs 1 = 1 pair
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Features & Specifications

Add the ACE400 in every room in the house and you'll still have money left over to throw a big party! About the size of a light can, ACE400 offers impressive sound for its small size and price. Part of our Architectural Ceiling Element, this speaker includes micro-flanged grilles with a very thin trim line, about .15". The ACE Series comes in every price point, from our very lowest like the ACE400 you see here, to our top-of-the line 8" trimless thin bezel Spitfire ceiling speaker. Sold in pairs, the ACE400 is a great speaker for large areas where you need a lot of speakers but don’t have an endless budget. This speaker is rated at 60W with a 3" woofer, so it's best for background music; however, in spite of the low price, customers often compliment us on the very solid sound the ACE400 in-ceiling speaker provides.

The Trimless Design is a Nice Touch
The Architectural Ceiling Element (ACE) Trimless thin bezel in-ceiling and in-wall speakers are a great choice for new construction or retrofit. These flush mounted speakers are hardly noticeable; that is until they're playing. The micro flange grilles are attached by extremely powerful magnets that stay put for quick and easy installation. Adds less visual impact on your architectural audio installation.

What Gauge Wire Should I Use?
Wire gauge ratings (AWG) can be confusing; just remember that the lower the gauge the thicker the cable. For runs up to 100 feet for background music, 16-gauge will be fine. If the run is approaching or exceeding 100 feet, we recommend 14-gauge wire. We also recommend using our CL-rated cable that is specifically design for in-wal use.

Testing the Sound Quality
Your new speakers arrived but before you get out the tool box you want to hear how they sound. You can test the sound quality but keep in mind that these flush-mount speakers are designed to be used in the wall or ceiling. Uninstalled in-wall/in-ceiling speakers will sound weak and tinny because without the proper enclosure (in this case your house wall) the speaker can’t produce the sound pressure level it needs. If you want to try them out, we recommend mounting the in-ceiling speakers into a box of about 3 cubic ft. or larger; or simply mount them in the ceiling and then listen. This will give you an accurate measure of the sound quality.

For a retrofit installation, no construction bracket is needed.


Other Product Info

A 3" single drive Ceiling Speaker with the footprint of a can light! Sprinkle them throughout the house, add a subwoofer, at OSD you can create an amazing music system without breaking the bank. ACE (Architectural Ceiling Element) series invisible trimless ceiling speakers combine elegant, modern style with outstanding audio performance. The new micro flange grilles have a thin (0.15") trim, giving the ACE speakers a clean and sleek appearance that seamlessly integrates into any design space. Match your recessed lighting size and you won't even notice that there are speakers there!



  View Owner's Manual          


By Christopher from North of Detroit Michigan on September 7, 2012
I am in the process of restoring a 120 year old farm house. My first project has been the bathroom. I am looking to add some modern features into the bathroom, being an in ceiling stereo. I am curious if this speaker would be okay for that application? I have installed an exhaust fan to rid the room of much of the shower moisture. Since this speaker has a poly pro cone I wanted to check and see if it would be okay in a moist atmosphere? Thanks !
By Customer Service - Q&A on September 10, 2012

Hi Christopher,
The ACE400 is a great little speaker and some customers have installed it in areas like bathrooms. Keep in mind, however, that this speaker is not specifically treated for moist environments like the OSD ICE600WRS. If you decide to go with the ACE400, consider adding a layer of clear coat (spray can only) to give the speaker extra protection and silicone around the trim, against the wall. Good luck on your project!

By Larry from austin tx on January 21, 2013
Anybody using these as rear channel speakers for a home theater? I am thinking about placement in the ceiling directly above the seating area.
By Customer Service - Q&A on January 21, 2013

Hi Larry,

We recommend placing the speaker at least a foot behind your listening area (if there is room). We also recommend going with at least the ACE500 or ACE520 both which feature a dedicated pivoting tweeter which can be aimed towards your listening area. The ACE400 is a dual cone design with no tweeter and might not have the clarity to really reproduce the surround channel information to its fullest. Note both the ACE500 and ACE520 cost a bit more but do feature free shipping.

TL/MA - 1568

By Matt McCreless from Tallahassee, FL on January 13, 2012
can i hook up a tv with an optical audio out to these speakers with out a receiver
By Customer Service - Q&A on January 13, 2012

Hi Matt,

These speakers cannot be connected to an Optic audio output or any pre-amplified signal. They need an amplifier. Take a look at our affordable AMP60 to drive these from an analog connection if available from your TV/monitor. It would be two RCA connectors labeled Right and Left Audio Out.


By melinda from Chula Vista, CA on November 17, 2012
Can this item be used to just fill in a speaker hole? I just moved into a house and can't afford the speaker systems right now, but I have 6 holes left in the ceiling and I don't want to patch them because then I wouldn't be able to find the holes later. I just want to cover the holes right now. Would this work?
By Customer Service - Q&A on November 19, 2012

Hi Melinda,
What is the diameter of the holes you have currently? We can help you find at least an inexpensive pair. Hooking them up would be a good idea for future use since you have to install something anyway. Please measure the hole size for all that you need to fill.Check to see if their is speaker wire running to each location as well. The standard framed speakers are more affordable than the trim-less design.
CL 1388

By john from florida on April 19, 2012
was the sound quality good,i'm looking for something that gives a decent sound nothing superior but where you can listen to music with no crackling etc.
By Customer Service - Q&A on April 20, 2012

Hi John,
The ACE400 is a great quality speaker and includes a 10-year warranty. It has a peak of 60 watts and a 3" polypropylene woofer. It also features a sleek trimless design. Keep in mind, however, that this is a smaller speaker so you won’t get a lot of bass response. For example, our ICE520 (not trim-less) has a 5¼ woofer which will give you more bass.

Product Reviews

ACE400 3" Trimless Thin Bezel Ceiling Speaker Pair
4.5 Stars based on 17 Review(s)
Fred Roth
Tnousand Oaks, CA
5 Stars
I would recommend this item to a friend.

Juast what I wanted at a reasonable price
January 13, 2014
All I was looking for was some small speakers to put background music into a new room I was building. These speakers worked out find and were easy to install. Best of all, they were less than half what the brick & mortar stores offered to sell. Of course theirs might have done better at a volume to crack the plaster but that is not what I wanted.

Burlington, Canada
5 Stars
I would recommend this item to a friend.

Great product for the price
December 12, 2013
The speakers were very easy to install and sound pretty good. The were installed in a restaurant with a low ceiling height, 9'. I just found the shipping costs to be a little high. Have had many items shipped from around the US to Canada but this was the most ever paid for shipping............

queen creek Arizona
5 Stars
I would recommend this item to a friend.

great speedy shipping
October 23, 2013
the speakers were the wrong size but they were awesome looking speakers wish I could use them will order more later
Best Uses:
They were nice speakers I wish they would have fit the holes that were pre drilled but That was my fault

4 Stars
I would recommend this item to a friend.

Very surprised by the sound quality!
April 8, 2013
Wasn't expecting much given the price, but these are perfect for whole-house music systems. They're not gonna thump, but they sound great.
Price, look, sound quality,
I had an issue with pretty much every speaker when tightening the screw that "clamps" it in. Out of the 8 speakers I installed, an average of 1 screw out of the 4 per speaker went crooked (for lack of other terms) & didn't clamp down on the drywall. No big deal, it won't fall out, but I'm anal when it comes to this stuff.

robert l creazzo
easton pa.
4 Stars
I would recommend this item to a friend.

April 3, 2013
great speakers for the price would buy from osd again
good for the money
Best Uses:
whole house

5 Stars
I would recommend this item to a friend.

Nice and small.
April 2, 2013
Very nice speaker,nice size and very good quality sound. I love
Sound,size and designed.
Best Uses:
Anything audio systems

Spokane, Wa
4 Stars
I would recommend this item to a friend.

Big Bang for little Buck !
January 31, 2013
Installed 3 pair in ceiling, and sound is excellent. I will purchase more to complete the rest of home.
Good Power Output, Attractive Design, Great Sound Quality, Easy To Set Up, Easy to Mount
Best Uses:
Smaller Rooms, Multiple Rooms / Whole House, Home

jwyatt homes
nashville tn
5 Stars
I would recommend this item to a friend.

Good speakers
September 10, 2012
We use these in the homes that we build to sell.
Good Power Output, Attractive Design, Easy to Mount, Easy To Set Up, Great Sound Quality
Best Uses:
Multiple Rooms / Whole House, Home

5 Stars
I would recommend this item to a friend.

Just what I was looking for
January 29, 2012
Nice speakers. Blend in nicely and sound great. Installation was easy. Worried about making the first cut into my ceiling. Just follow the templet and all will be fine.
Easy to Mount, Easy To Setup, Great Sound Quality, Attractive Design, Good Power Output

Nine Mile Falls, WA
5 Stars
I would recommend this item to a friend.

I will buy this product again
December 30, 2011
Ace 400 trimless, I bought 8 pair of these for our whole home audio system and while I was a bit skeptical they turned out to not only be very atractive, they sound great. I also purchased the SPW-8 and VMS Decora volume controls and now have a great home sound system. I have a big custom home and when I add the remaining 6 zones I will definetly buy more of these speakers!!
Easy To Setup, Easy to Mount, Good Power Output, Attractive Design, Great Sound Quality
Best Uses:
Multiple Rooms / Whole House

Los Angeles, CA
5 Stars
I would recommend this item to a friend.

Small and Powerful
August 22, 2011
Bought two sets. Perfect for outdoor spaces, you'll never have to speak over the music while hanging around pool side. Great add edition for the bathroom and hallway. At the beginning I thought I was going to need 10 watt channels to power these babies. I hooked them on to a Sony CMT-LX20i iPod Dock Micro Hi-Fi Shelf System which are 2 watts a channel and it did the job. Don't expect the sound quality to be of a $400 dollar speakers, but if you have it hook up to a receiver man o man, they handle there own just supply your own sub-woofer for bass and your good(like a fat kid eating chocolate cake).
Attractive Design, Easy to Mount, Perfect outdoor spaces, Good Power Output, Great Sound Quality, Easy To Setup
Best Uses:
Outdoors, Home, Multiple Rooms / Whole House, Smaller Rooms

4 Stars
I would recommend this item to a friend.

A+ for ACE400
August 22, 2011
If mounting in ceiling tiles, use a dry wall saw and start in the middle. Other than that, follow the line after marking with the included template. Have no complaints. This is the 2nd batch I have installed in offices. Can't be beat for the money.
Easy To Setup, Great Sound Quality, Attractive Design, Easy to Mount, Good Power Output
Best Uses:
Basic Systems

5 Stars
I would recommend this item to a friend.

Big noise in a small speaker
August 11, 2011
I have one pair of these in our kitchen. They are running through in wall volume control. They sound amazing and are easy to install. I have recommended these speakers and will continue to do so. Best value in speakers I've found.
Size, Easy To Setup, Easy to Mount, Cost, Good Power Output, Great Sound Quality, Value, Attractive Design
Best Uses:
Basic Systems, Smaller Rooms

5 Stars
I would recommend this item to a friend.

July 8, 2011
Easy to Mount, Attractive Design, Great Sound Quality
Best Uses:
Home Theater

Denver, CO
4 Stars
I would recommend this item to a friend.

Power Packed
July 7, 2011
Great little speakers that pack a great sound into my little workout area in the basement. I used a self-impeadance matching volume control in line with these guys so I can control the volume on a nearby wall. Works great to have some tunes in the basement without having to blast everyone out upstairs.
Good Power Output, Easy To Setup, Great Sound Quality
Weak Bass
Best Uses:
Smaller Rooms

5 Stars

Nice value I believe. The ...
July 12, 2009
Nice value I believe. The speakers are very nice looking, sound nice, came fast and affordable. What else can you ask for? Would buy again especially if incentives were thrown out there.

5 Stars

No complaint whatsoever. ...
July 10, 2009
No complaint whatsoever. Exceeded expectations.